Engraving-machine.



0. NELSON & G. M. JONES.

ENGRAVING MACHINE.

APPLICATION FILED JUNE 17, 1912.

1,088,358, Patented Feb. 24, 1914.

UNTTE @TATS TET'OFFIUE.

OTTO NELSON AND CHAR/LES MYBON JONES, 0F NORTH YAKIMA, WASHINGTON.

ENGRA'VINGr-MACHINE.

reassess.

Specification of Letters Patent.

Patented Feb. 24, 1914..

To all whom it may concern Be it known that we, OTTO Nnuson and GIIARLES MYnoN Jonas, citizens of the United States, and residing at North Yakima, in the county of Yakima and State of Washington, have invented new and useful Improvements in Engraving-lvlachines, of which the following is a specification.

Our invention relates to the improvement in engraving machines in which by the sub stitution of an entirely new graver arm, graver head, graver and controlling lever, the work of engraving and shading is done without re-adjusting any part of the machine, instead of by two separate and distinct adjustments and operations as in the engraving machines now in use. The graver arm on the machines now in use are straight with graver head and adjustments on outer end, with graver projecting below. In former machines the graver point after being adjusted for right hand shading must be re adjusted for left hand shading; and the work-holding-table must also be re-adjusted after each adjustment of the graver, in order that the lines cut may meet perfectly and correspond to the pattern type. This has been the weak pointheretofore in all ongraving machines, as it requires mechanical skill to get the adjustments exact. It is also a great loss of time and labor.

The principal object of the present invention is to provide a highly efficient engraving machine adapted to overcome all the above noted diiiiculties, and capable of engraving a perfect letter without any re-ad justments.

We attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of our entire attachment or improvement in engraving machines that is to be substituted for or take the place of the graver arm, graver head, graver, and controlling lever of the engraving machine that is set forth and illustrated in the United States Letters Patent No. 7 29,7 58; Fig. 2 is a side elevation of our improvement in engraving machines, attached to yoke, G, together with a view of said yoke, G; Fig. 3 is a sectional view of graver head which. holds graver, J, and is located on the end of arched graver arm, C, as shown in Fig. 1; Fig. 4: is a front elevation of outside casing of .graver head, D, and

the top view of plate, E, showing the swell, Y; Fig. 5 is a side elevation of block, G, and thumb-nut F; Fig. 6 is a side elevation of cylinder, I, and thumb-nut H; Fig. 7 shows a front elevation of graver, J; Fig. 8 is a sectional view of the rear end of arched graver arm, G, and bearings; Fig. 9 is a side elevation of the graver.

Similar letters refer to similar parts throughout the several views.

A is a tube, turned true inside with cone hearings, in which the arched graver arm, C, turns. It screws solidly into yoke, G, and is held rigidly in place by four setscrews, 6.

B is a curved tube, brazed solidly into the tube A, and lying on a plane horizontal with it. The outer end of the curved tube, B, acts as a fulcrum in which the controlling lever, N, works in the operation of the engraving machine.

C is the arched graver arm, turned true on the rear end with cone bearings, and swings true in tube A. It is secured by nuts V and W, V forming one cone bearing. On the forward end of arched graver arm, C, is securely fastened casing, D; on the side is screwed bearing hinge, L, in which bar, M, is secured. The arched graver arm, C, is drilled through the center of the rear end and turned true for the reception of the pointed rod, U.

D is the casing of the graver head, and is securely fastened on the end of arched graver arm, C. In casing, D, the different adjustments of the graver, J, are made as shown in sectional view in Fig. 3.

E is a plate, screwed securely on top of casing, D, and works snugly in groove of nut F. It is swelled in the center, see Y Fig. l, to prevent friction in adjustin F is a thumb-nut which screws on top of block, G, and by turning either raises or lowers block, G, to secure vertical adjustment of graver, J.

G is a block, the lower part of which is square outside, and fits snugly in casing, D, from back to front, and held securely in place by screw-lugs X, X, which work in grooves Q, Q. The bottom is held firmly and adjusted to right' and left by thumbscrews K, K, which enables the graver point to be adjusted to the center of the arc of circle described by arched graver arm, C; the top is threaded for the reception of thumb-nut F. Block, G, is turned true inside with cone bearings at the bottom for the reception of cylinder, I.

H is a thumb-nut which screws on top of cylinder, I, and when tightened holds cylinder, I, firmly in block, Gr.

I is a cylinder, turned true outside to fit snugly inside of block, G, with cone bearings at the bottom, and threaded at the top for the reception of thumb-nut H; by adjusting with said thumb-nut, H, the face of the graver, J, can be turned without changing the location or adjustment of the point of the graver, J. The cylinder, I, is milled true and square for the reception of graver, J. The graver, J, is held securely in place by screws Z, Z.

J is the graver, milled true and square and fits snugly in cylinder, I. The bottom end of graver, J, is flattened to the center, so that when sharpened, the cutting point of graver, J, is exactly in the center of graver, J

K, K are thumb-screws which screw in the side of casing, D; the ends working against sides of block, G, and by means of these the side adjustment of graver, J, is made.

L is a hinge which is screwed on the side of arched graver arm, 0, for the reception of the end of the bar, M.

M is a bar connection controlling lever, N, and hinge, L, by which arched graver arm, C, is rotated on its bearings in tube A.

N is a controlling lever, controlling the position of arched graver arm, 0. It is hinged on the end of tube B, and secured by nut T; by tilting controlling lever, N, the angle of graver, J, is changed to secure either right or left hand shading, without altering the relative location of the cutting point of graver, J.

O is a tube, that slides on the lower end of controlling lever, N. The top of tube 0, is threaded and split, and by tightening nua S, the top is closed securing it to controlling lever, N, in any desired position.

P is a tube that slides over tube 0. The top of tube, P, being fastened by thumb-nut R, fastening it securely to tube 0. By means of tube 0, and tube P, the length of controlling lever, N, is lengthened or shortened to accommodate it to different kinds of work.

Q, Q, are grooves, milled true in the front and back of block, Ur, for the reception of screw-lugs X, X.

R is a thumb-nut on top of the tube P, for securing it to tube 0.

S is a thumb-nut on top of tube 0, for securing it to controlling lever, N.

T is a thumb-nut on end of curved tube, B, which secures controlling lever, N, in place.

U is a pointed rod, turned true and pointed at one end. It fits snugly in bearings in arched graver arm, 0. The pointed rod, U, is always in the center of the arc of the circle described by the arched graver arm, C. The pointed rod, U, is drawn out so that its point is even with the point of graver, J. By adjusting the point of graver, J, so that it exactly meets the point of the pointed rod, U, the point of graver, J, will be in the center of the arc and by tilting the arched graver arm, C, on its bearings the angle of graver, J, is changed but the cutting point remains the same. After adjusting graver, J, the pointed rod, U, may be pushed back into arched graver arm, C, so as to be out of the way.

V is a nut which screws on the rear end of arched graver arm, C, and is turned to a cone bearing on one side. By adjusting nut V, all play is taken up in the bearings so that arched graver arm, C, turns perfectly true.

Wis a lock nut securing nut V, in place.

X, X are screw-lugs, screwed into casing, D; the ends being turned to fit accurately and snugly into the grooves Q, Q, in block, G; thus preventing any side motion of block, G, but allowing it to be moved freely by screws K, K.

Y is a slight swell of plate, E, and works in nut F. Swell, Y, is to prevent binding when adjustment is made by screws K, K. t

Z, Z are screws in cylinder, the graver, J, is held in place.

G is the yoke that is set forth and illustrated as yoke 21 in Fig. 1 of the United States Letters Patent No. 729,7 58.

b is one of four set-screws in yoke, G, which holds the tube A, rigidly in place.

c, d, e are parts of machine described in said United States Letters Patent No. 729,758, and are used to illustrate how our improvement is connected.

Having thus fully described our invention; what we claim is new and desire to secure by Letters Patent of the United States is,

1. In an engraving machine, a graver arm having a longitudinally drilled rear portion and an arched forward portion; a tubular member having a conical bearing for the graver arm and brazed to the side thereof a curved tube on the outer end of which is fulcrumed a controlling lever, a graver carrying head carried upon the outer arched I, by which end of the graver arm, a link hinged to the side of the graver arm and pivotally connected to the end of the controlling member and a pointed rod mounted in the bore of the rear portion of the graver arm and terminating beneath the center of the graver head to properly locate the point of the graver, substantially as described.

2 In an engraving machine, a rotary swinging graver arm, a pivoted controlling lever for said graver arm having a lower cylindrical portion, a bar linking said controlling lever With said graver arm and an extensible member comprising telescopic tubes and set-nuts therefor carried by said lower cylindrical portion of the controlling lever, whereby to regulate the length of the controlling lever to suit the Work, substantially as set forth.

3. In an engraving machine, the combination of an arched graver arm, a graver head carried by the outer end of said arm, and means Within said graver head for independently adjusting a graver in a plurality of positions therein, said adjusting means consisting of a thumb nut having a freely rotatable connection with said graver head,

a block threaded in said nut for vertical adjustment and suspended thereby in said head, means carried by said head and bearing on said suspended block to horizontally adjust its free end, a rotary cylinder axially carried by said block and having an axial opening to receive a gravel", and means for fixing said rotary cylinder in said block, whereby the faces of the graver may be set Without disturbing the above-mentioned adjustments.

OTTO NELSON. CHARLES MYRON JONES.

/Vitnesses G. A. MYERS, R. H. WARNIGK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of .Patents, Washington, D. C. 

